Valved percolator-pot.



J. W. CHAPMAN. VLVED PBRGOLATOB OT. APPLICATION FILED mmf/.7, moa.

Patented Apr. 26,1910. 3 SHEETS-SHEET l.'

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J. w. CHAPMAN. VALVED PERCOLATOR POT. APPLICATION FILED JUEBZ'T, 1908.

956,481 i Patented Apr. 26, 1910. v 3 SHEETSSHEBT Z.

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J. W. CHAPMAN. VALVED PERCOLTOR POT. Brummen FILED 311111127, 190e.

0.3. m. w. 1m 007W .un 2,.. wm LT n Aus m. Mw V.; m. .um am .Wv

pot'. provided with my improvements. Fig.

*taining chamber -t bv .said uccla 2. ii'ithin lcover serves toettectually separate or shut off t-he heating chamber 3 from the main4her .4 is insulated from the heating chaniber Vhas a loose tit,providing an overflow pas- U'NTTED sTATEs PATENT OFFICE.

JAMES CHAPMAN, OF MERIDEN, CONNECTICUT, ASSIGNOR TO MANNING, BOWMAN 8cCOMPANY, 0F MERIDEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

VALVED PERCGLATORPOT.

Specification of Letters Patent.

Patented Apr. 26, 1910.

Application filed June 27, 1908. Serial No. 440,651.

To all 'whom 'it Imay concern.'

Be it known that I, Janes iV. CHAPMAN, f a citizen of the United States,residing at Meriden, county ot' New Haven, State of Connecticut, haveinvented certain new and useful Improvements in Valved Percolator- Iots,of which the following is a full, clear, and exactdescription.

' My invention relates to improvements in sti-called percolator coti'cepots, and is particularly concerned wit-h means whereby speed ofoperation may be increased and cotfee may he produced with the least ex-'peuditure of heat.

Preferred eiiihodiineiits of my invention are illustrated in the.accompanying drawings, in which,

Figure 1 is a vertical section of a coffee 2 is a similar View of amodified form of pot. Fig. 3 is a fragmentary view ot' a portion of apot illustrating a still further inoditication. Fig. 4 is a view of aiiioditied arrangementof a valvn embodying my invention. Fig. 5 is anunder side view of the parts shown in Fig. 4.

in the embodiments of my invention herein selected for illustration andreferring particularly to Fig. 1, l indicates the coffee pot. liroper,which, in the `forni here shown, is provided with the spun-iii neck 2,forming a lower heating' chamber 3, which is partially separated fromthe main conthe neck is titled what may be called a hell or cover havinga thing-e ti which overlies the upper portion ot' the neck 2. lliischamber 4, and'iiiasinuch as said cover is formed in the shape of a.closed air eliam ber, the liquid contained in the main chain- 'lhecover 5 is provided with a percolator tube 7 which extends up throughthe body of the vessel and through a sleeve S secured to the base of thedrip chamber 9, .within which sleeve S the .percolator tube Sage 10between the tube and sleeve, through which excess of liquid in the dripchamber may he returned to the main chamber 4. The percolator tube isalso provided at its upper end with apertures 11, through which theheated liquid may tiow over and upon pie coffee contained within thedrip chamiel 9.

In the operation ofpercoletor pots heretofore constructed, greatdifliculty has been experienced in preventing the heated liquid from theheating chamber from tiowing back into the main chamber 4, rather thanup through the percolator tube 7. My invention is designed toetfectually prevent such return of the heated liquid to the main chamberby providing an automatic valve between the heating chamber 3 and themain chamber 4. In the embodiment of the in vention here shown,communication between the heating chamber 3 and the main chamber 4- issecured through atube 12, which is preferably mounted upon and extendsthrough the cover 5 and has upon its upper end a valve chamber 13provided with a valve seat 14. in Vwhich is seated a ballvalve 15. Aremovable cover 16 gives ready access to the valve chamber for cleaningor other purposes.

in the operation ofthe device, the cover 5 and tube 7 are removed fromthe pot, and the hitter is partially filled with water; thereupon .saidcover is replaced Within the iicclt 2. thus shutting ott" a limited bodyof water within the heat-ing cha 'oer 3 and from the main chamber 4.Waco heat is applied to the ehaniber 3, the liquid therein is rapidlyraised in temperature. In the initial operation of the device, -thisliquid is forced by the steam generated in the chamber I upwardlythrough the percolator tube T and Hows over and upon the coffee in thedrip chamber 9, whence it pert'olatcs through the cotl'ee and drips intothe main chauibe". at the saine time a portion of the liquid is forcedthrough the inlet tube 1Q into the valve chamber 13. The pressure withindie chamber 3 and the weight of thel valve initially serve to hold theball-valve against its` valve seat 14, until, by reason of the expulsionof the liquid up through the. percolator tube 7b v the steam pressure.

pressure in the heating chamber 3 is reehainhei, and tht` onh escape,therefore, is through tlttpereolating tiihe T. 'l`liiis it will he .seenthat. the pereolatiiigr operation in carried ou :iiitoiiiatieall v, andthat the en- 33' is' siilistantiallv tlie saine eoiistriietioii :is

y o!v ronsiderahle height with nliirli the pertiie heating energy isexpended iii diiving i the heated liquid iip through the pereolatortiihe. T and witliont wasrte if :inv of said energv iti the eseape ol'the heated liquid to the umili chaniher l.

ln the inodit'ied l'oini ol' the invention illustrated iii Fig. 2,instead of forming:r the Y liodv of the pot with a spun-in neel( "l, apot 1i' of ordinary construction is eiiiploved,

\\ ithin wliieh is soldered or otherwise secured a collar 18, thusl'oi'iiiinor a heating eltainher lJ, which is eti'eettiallv insulatedfront the niaiii ehainher hmv the air spaee ift), within the collar 1S.'l`lie pereolaiing eover t'ihr, inlet tube`v and valve elianxhei' aresiiiiilaiA in all respects lo the eoriesponding parts illus-i trated invFig. t.

In this einhodinient otl in v invention, however, l shew a inoditiedtorin of overflow for the drip eliainher zit, which comprises a tuiie.22 secured at anuv conven- I ientpartof the drip ehaniher, as the sidethereof, through which the excess. ot liquid froni the i'iereolator tubewill he returned to the niaiii eiiaiiiher of the pot.

In the Second inoditieation of inv invention illustrated in Fig. 5t, theheating:r eliaiiibei' 23 foriiied h v .spinningr down a portion of thehottoin plate 2l ot the pot, within which ehainher is nioiinted the.pereolator eover provided with :i 26, inlet tube :7 and valve e iauiherl"or the purpose o securing rapid heating. ot' this foi-in of heatingelianiher, a solid nietal heating plate Qt) is secured thereto hv tneansof a hoss 30, on said plate, .secured ifithin a spun-np 'irojeetion 31in the hase of the heating eliainher. The :ittaeinnent of the heatingplatt is siieh that :i considerable air space is left lit-,tween thehotly of and the bottoni proper 2t. o leaving :in air .spaee h v whichthe inaiii Vereoliiting tiihe rtdntor tiilie Clit eiininiiniitzites iiithe iisiiiil inzinner. 'l`he valve nieniher in this nioilitieationeouiprists :i tiihe it'. whit-li atl'oi'ils eoniintuiiezition hetweenthe niain eliainher .il thu pot and the heating eliauiher Ill. throughhall-valve` 25T resting in the. valve seal Fh inonnied iipoii the tithe:18. rl`he tnhe Ilt is reinovzdilv seated in sleeve t" whieh issiiitahlv seeiii'ed iii the eoi'ei .'l. ivliei'tlrr. for eleaiiingpurposes. tiihe 3o' and the valve :ittaeleed thereto 'nav he readilyien|o\'eil lv this arrangement a vetv et Aiipart eonsiii'nrtion is:set-tired and one whit-h eliminates the iieiesszitv of a v:il\eelianther `separate front the heating eliainher.

While l h:i\e. herein A@hewn several fornis: in whieh my invention inayl einltodied, it is to he understood that the saine iS not liniited tothese fortes, hiit may he modified in detail as well :is arrangement ofparts witliont departing t'ioni the spirit or seope of tn v iniention.

ll'hat l elaiin iS:

l. lii a pew-.olator pot. :i n'iain containing eliainhei. :i heatin rehaniher, a eovei for said 'heating ehainhei having a pereol-.iting tuhiextending-` tiert-troni, an inlet pipe passing through laid eover and :ivalve eliainhi-r having a valve openintr eoinniiinieating with said pipeand having a valve therein overlying said openng arranged to he elns-edhv gravity and hy pressure within 2 .said heating i'hainher.

iortion thei'ethe poi. thus;

pereolator pot having a niain containingr elianiher. a heatingeliainher, :i cover theret'oi'. a pereolating tithe extending from saidheating eliainher. a pipe,connecting .said elizitnhers; and providedwith a valve ehaniher outside` ol' said heating eliainher having. avalve opening and a valve in said valve rhaniher ovei'lvitir saidoit-uintr and chtiiiiher of' the pot is etl'eetiialli' insulated I frontthe sotiree of heat in a iiiannei' siniilar to tlizit.- leserihedin theiiiodllicatioiis illtistrated in Figs. l and L'. he eurer 2? iii this4:second inoditieation has foi-ined in its hase :i

reizess.' lnit`out of contact with, the. projection I'il fortiied in thehase ot' the heatingr ehaniher 2, \\'herel),\ the liquid within saidehaniher vwhich extends over and around, :t

i1' the more rapidly heated and at. tht-saine L tiine eoniiiiuiiioatioiiis .seeiii'ed through said heating ehainher froin the inlet tiila- 'T tothe pereolator tithe 2U. Aside front the means for conveying heat, tothe heating,r elianiher as b v means of the solid plaie it), theoperation of this forni of my invention is similar to that; deserihedfor Figs. l :intl 2.

tn the modified forni of pereolat or valve and eover shown in Figs. tand5, the cover arranged to he elosed h v gravity and hy press-tire in saidheating chaniliei.

pereol:it,r pot, having :i niain containing ehainhei'` a heatingelitiniher. a eowi for said heating elianiher having:r a pei-eolaliiigtiihe passing therethrough, :in inlet pipe extending through said eoverand having a valve eliaiiiher havingr a valve. opening eonininuit-atingrtherewith, and a valve in said valve eliainher overlying said openingwherehy said valve will he elosed by gravity.

4. pereolator pot. having a inain eliainhet', a heating elianiher. aheating plate attaehed to the hottoin ot said heating eliaiiihet'. andhaving a boss extending into said heating ohainher, a removable coverfor said heating ehaitiher, having a donied portion in its baseextendin'r over said boss' and foritiing a eontraetet passage around thesaine, a percolating tithe eoniinunieatingr

